Are These 5 Stars' Styles Updos or Updon'ts?

Upswept styles are an easy way to make a look dressier, so it's not surprising that they're very popular on Hollywood red carpets. In the past few days, everyone from Gwen Stefani to Kim Kardashian has gone out wearing an updo, but not all their styles came out equally well. Who looked picture-perfect, and who should try again with a new look? Vote for yourself.